 Hello, my name is Artur and I would like to demonstrate to you a simple example how to create, build, and debug applications on dual core STM42 WL55 microcontrollers. In this part I will demonstrate how to start dual core project for STM42 WL55J device using STM42Cube IDE. I will start with configuration of the peripherals and assigning them to both cores, so Cortex M4 and Cortex M0+. After this we will generate the simple projects for both cores and I will demonstrate how to prepare the code, how to build it for dual core architecture with an STM42Cube IDE. After this we will configure and run the dual core debug session using STLINK and STM42Cube IDE as well. For this session we will use NUCLEO WL55JC2 board, a micro USB cable to connect this board to PC and we will need PC with pre-installed the following software, STM42Cube IDE in version at least 1.5.0 and STM42WLCube library in version at least 1.0.0. Within our example we will prepare a very simple application which will use simple user interface components, so 3 buttons B1, B2 and B3 and 3 LEDs, LED1, LED2 and LED3. All buttons will be configured as external interrupts and will be assigned to different cores which are available within our STM42WL55 device. And the same story will be with LEDs, so we will distribute LEDs between both cores. We would enable as well the internal pull-ups for all of the buttons and just to make the exercise simple, we will keep the default clock setting using 4 MHz clocking system from MSI. After this we will generate the count using STM42Cube IDE. Thank you for your attention.